(function ($) {
	$(function () {
		bnrSilder();
		anchorLink();
	});	
	function anchorLink(){
		$(".txt-nav li").click(function(){
			var idx = $(".txt-nav li").index(this),
				scrTop;
			switch (idx){
				case  0 : 
				scrTop = 200;
				break;
				case  1 : 
				scrTop = 640;
				break;
				case  2 : 
				 scrTop = 1180; 
				break;
				case  3 :
				  scrTop = 1680; 
				break;
				case  4 :
				  scrTop = 2030; 
				break;

			}
			$("body,html").animate({scrollTop:scrTop},600);
		});
	};
	function bnrSilder() {
		if (!$("#head").length && !$("#bnr").length) {
			return;
		}
		(function () {
			var sstag = document.createElement('script');
			sstag.type = 'text/javascript';
			sstag.async = true;
			sstag.src = 'SmoothScroll.js';
			var s = document.getElementsByTagName('script')[0];
			s.parentNode.insertBefore(sstag, s);
		})();
		$(window).scroll(function () {
			var bTop = $(this).scrollTop();
			$('.bnr-box').css({
				'margin-top' : -bTop * 0.48
			});
			$('.bnr-txt').css({
				'margin-top' : -bTop * 0.68
			});
			$('.bnr-btn').css({
				'margin-top' : -bTop * 0.68
			});
			$('.warper').css({
				"background-position" : "50% " + bTop * 0.2 + "px"
			});
			if (bTop < 200) {
				$(".txt-warp").css({
					'margin-top' : -bTop * 1.5
				});
				$(".txt-nav-warp").removeAttr("style");
			} else {
				$(".txt-warp").css({
					'margin-top' : -240
				});
				$(".txt-nav-warp").css({
					"position" : "fixed",
					"top" : 0,
					"left" : 0,
					"box-shadow" : "0 2px 6px #eee"
				});
			}
			var idxs = 0;
			if ( bTop >= 200 && bTop < 577 ){ 
					idxs;
			}else if( bTop >= 577 && bTop < 1072  ){ 
					idxs = 1;
			}else if( bTop >= 1072 && bTop < 1125 ){ 
					idxs = 2;
			}else if( bTop >= 1125  ){
					idxs = 3;
			}
			$('.txt-nav li a').eq(idxs).addClass('on').parent().siblings().children().removeClass('on');
			if ( bTop < 200 ){
				$('.txt-nav li a').removeClass('on');
			}
		});
	};

})(jQuery);